//
// * Copyright (c) 2002-2009 "Neo Technology,"
// *     Network Engine for Objects in Lund AB [http://neotechnology.com]
// *
// * This file is part of Neo4j.
// * 
// * Neo4j is free software: you can redistribute it and/or modify
// * it under the terms of the GNU Affero General Public License as
// * published by the Free Software Foundation, either version 3 of the
// * License, or (at your option) any later version.
// * 
// * This program is distributed in the hope that it will be useful,
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// * GNU Affero General Public License for more details.
// * 
// * You should have received a copy of the GNU Affero General Public License
// * along with this program. If not, see <http://www.gnu.org/licenses/>.
// 
namespace org.neo4j.kernel.impl.core
{

// TODO: make LRU x elements
	public class PropertyIndex
	{
		private readonly string key;
		private readonly int keyId;

		protected internal PropertyIndex(string key, int keyId)
		{
			this.key = key;
			this.keyId = keyId;
		}

		public virtual string Key
		{
			get
			{
				return key;
			}
		}

		public override int GetHashCode()
		{
			return keyId;
		}

		public virtual int getKeyId()
		{
			return this.keyId;
		}

		public override bool Equals(object o)
		{
			if (o is PropertyIndex)
			{
				return keyId == ((PropertyIndex) o).getKeyId();
			}
			return false;
		}
	}
}